he is 39-year-old harado hernandez. on the job since 2010. transferred recently to los angeles from montana. the first-ever tsa officer killed in the line of duty. >> i'm speechless. i'm shocked. >> reporter: and the shooter, the fbi releasing his picture over night. paul ciancia, an l.a. resident, who authorities say opened fire with a high-power rifle, inside terminal three friday morning. >> we have an active shooting in terminal three. >> reporter: witnesses describe a chaotic scene, saying he started shooting right outside the security checkpoint, as police raced in, he made it all the way to the back of the terminal, near the departure gate. passengers ducked for cover. some even hid in a bathroom stall. officers had their guns drawn, yelling at passengers to drop to the floor. >> everybody on the floor. on the floor, now. >> reporter: and after people ran as fast as they could -- >> go, go. >> reporter: the panic and lockdown that followed blocked accidents from getting close, causing rescuers to run hundreds of yards to get the wounde